Demountable form for pouring concrete



Sept. 16, 1952 R. J. RosATl Erm.

DEMOUNTABLE FORM FOR POURING CONCRETE 4 4Sheets-Sheet 1 l Filed Jan. 12, 1951 I INVENTOR.. Roz/rolo d.' P0502?! BYz//ffe. ,5w/fers zforwy R. J. Rosh' ar-An.

DEMOUNTABLE FORM FOR POURING CONCRETE Sept. 16, 1952 f4 Sheets-Sheet 2 Filed Jan. l2, 1951 ATTORNEY sept. 16, 1952 R. J. Rosxm E-m.

DEMOUNTABLE FORM FR PURINQ CONCRETE 4 sheei-sheet s Filed Jan. 12, l1951 INVENT'OR Koma/0 zZ A7056! z :fdl/es Somer;

R. J. RosArlf' EVAL DEMOUNTABLE FORM FOR POURING CONCRETE Spt. 16, 195% fi-"Sheets-Sheet x4 Filed Jan. 12,'v 1951 INVENTQR.

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Jaw/asa Howe/5 Patented vSept. 1e, i952 DEMOUNTABLE FORM FOR POURING CONCRETE Romoio J. Rosati, Philadelphia, and James D. Somers, Chester, Pa.

Application January 12, 1951, Serial No. 205,726 5 claims. (ci. 25-1185 l lIn road building it is necessary to provide sewers for draining oit rain water with the openings leading to such sewers located at suitable intervals along the road. .The sewer openings are covered .with suitable 4grating Aanddue tothe collection of leaves or `other refuse, the grated sewer openings become partly 'or wholly clogged up. "Also, in a heavy rain storm the precipitation may exceed the capacity ofthe grated sewer opening even tho suchv 'opening .it notk at Vall clogged.

.'It is ktherefore necessaryto provide'overflow openings tocarry off such water as cannot iiow through thek grated openings. y

The. grated sewer `.openings are ush with vthe surface of the road and are built 'at .same time that `the road bed is poured. These, therefore, present no particular problem.

The .overilow openings, however, are usually built at 'the junction of the road bed with the curb and are built .simultaneously with the curb. This :involves the pouring oi a'rather intricate mould which requires a correspondingly intricate form. v

It has .heretofore been the practice to build the required form referred to out of wood,v and because .of the intricacy of the form, it could not be removed after the concrete has been poured except by being broken up. This meant excessive waste of lumber. When it is remembered that the forms are six,leight, or more feet long and that they have to be built of yheavy lumber so as 'to support the weight of the wet concrete,zit will be seen that the waste of lumber can be very serious. 1

The building of the forms usually takes a carpenter `and a helper several hours and because of the difficult nature ,of the work, and because a road contractor cannot afford to employ a full time carpenter to build the necessary 'form when and as needed, the practice has been generally to sublet the building of the overilow opening to specialists who go from one job to another. Such yspecialists are expensive andmay or may not be available at-the exact time they are needed, that is, when the road building has progressed to the point at which the overflow Y opening is to be built.

ilt is therefore the object of the invention (a.) to ,produce an improved demountable form made of metal so that it can be used over and over again, (b) to produce a form which 'can' be easily set up and easily removed by the usual road crews, (c) to produce a form which is adjustable to compensate for irregularities,V .and

(d) to produce a form whichcan be used tobuild the overflow opening and adjacent curb, before or after, the adjacent section of the road bed proper has been built.

These and other objects are attained by our invention vas set forth in the .following specincationand as shown in the accompanying drawings in which:

Fig. 1 is an isometric View lof a demountable form embodying our invention.

Fig. 2 is 'a section on line 2-2 on Fig. 1.

Fig. 3 is -an exploded,` isometric view of the part bracketed byline 3-3 on Fig. 4.

Fig. 4- is a sectional view taken 'on line 4?-4 onFg. 2. Y n v Fig. 5 is an exploded, Visometric view ofthe adjacent portions of one of the end walls and one of the sidewalls.

Fig. 6 is a Vertical sectional view 4showing the overow opening which is built by means of the form referred to.

Fig. 7 is a side elevational View of a modified form ofthe left hand side wall as viewed in Fig. 1.

Fig. 8 is a Yfragmentary top plan view showing a part of the road bed adjacent andan overflow opening built by the mold embodying our invention.

Fig. 9 is a sectional view taken on line 9-9 on Fig. 8 before the demountable Vform of our invention has been removed.

The form shown in Fig. 1 is rectangular in shape andhas two end walls I0, an outer side wall l2 and an inner wall I4. The end walls l0 being identical, a description of one of-ithem will suiiice.

As will be seen from the right hand end of Fig. l, each end wall 'I0 is formed of a plate `|6 of the required size and shape and that 'it is reinforced with vertical angles I8 and horizontal angles 2i). The plate I6 and the angles vI8 and 29 are made 'of metal having ythe necessary rigidity and are welded or otherwise integrated as a, unit. Each of the end plates l0 is also provided with a lower extension plate 22 which is adjustablysecured in position by wing nuts 22X which engagebolts 23 carried by plate i6. The bolts 23 pass through horizontal slots S whereby plate 22 may be adjusted relative to its end wall 10 vfor a, purpose hereinafter set forth.

The outer side wall l2 is formed of a plate which is of the desired gauge and which is reinforced by vertical angles 26 and horizontal angles 28 which are Welded or otherwise secured together and to plate l2.

The side wall I4 is also formed of a plate ofY the desired size and gauge and is provided with suitablyl secured vertical and horizontal angles 42 and 44 which are similar to the corresponding angles on the outside of side wall I2.

On its inner side, the side wall I4 is provided with a removable forming member 46 which includes a lower vertical wall 48 and an upper slanting wall 56. The vertical wall 48, the upper slanting wall 56 and the side wall I4 are, respectively, responsible for the formation of walls 48A, 56A and I4A 'of vthe concrete form of Fig. 6.

As will be seen from Figs. 3 and 4, the member 46 is shorter than the side-wall I4 so as to leave spaces 4l between it and the end walls I6. The member 46 is made of sheet metal of the desired gauge and is provided with exterior, vertically disposed, reinforcing webs or plates 54. The member 46 is secured to the side wall I4 by Wing nuts or the like 56 which engage bolts 58. The bolts 58 pass through registering openings 59 in a pendent flange 66 of member 46 and through vertical adjustmentslots 6I in the side wall I4. To vthe side Wall I4, at a point above member 46 there is also secured an angle member 62 the slanted face 53 of which corresponds to the slanted face 36 of member 30 on side wall I2.

The member 62 is preferably mounted for vertical adjustment and the slanted surface 63 thereof is responsible for thev formation of the slanted surface 63A of the concrete mold as shown in Fig. 6.

In order to make the form readily demountable, the horizontal angles on the end and side walls are provided with registering openings 64 ywhich are adapted to receive bolts 66 in the manner best shown in Fig. 1.

In order to facilitate its removal, the forming member 46 is made of a relatively long central section A and two end sections B which are detachably secured tothe ends of the central section. As best shown in Fig. 3, the end Walls of the center section A are provided with apertures 68, which register with corresponding openings 68A in the inner end walls of sections B, for receiving bolts or the like 69. See Fig. 4. The outer end walls 'I6 of sections B are provided with adjustment plates 'II which correspond to adjustment plates 22 on end walls I0. The plates 'II are' provided with slots I2 for receiving bolts 'I4 which also pass through holes 'I6 in end plates '10. The vertical edges of adjustment plates 'II are recessed or cut away as at I8 to accommodate the retaining lugs 80 of the grate-supporting casting 82 which overlies the sewer inlet opening formed in the road bed R.

In practice, the outer wall I2 is placed in position and the member 36 is raised or lowered according to the height of the curb to be formed. The end walls are then placed in position and the extension plates 22 are adjusted, in either direction, until the vertical edges 22A thereof abut the edge E of the road bed R.. With the four walls in position, bolts 66 are driven through holes 64 in the overlapping ends of horizontal angles 20 and 28 to hold the side and end walls together and the members 46 and 62 are adjusted to the desired position relative to side wall I4.

If the road bed R has been built, the side wall I4 of Fig. 1, in which the end walls 'III are spaced from the extension plates 22, is used. If the overflow opening is to be built before the road bed has been built, the side wall I4 of Fig. '7, in which the spaces between end walls I6 and extension plates 22 are closed by detachable -plates P, is used so as to retain the concrete as it is poured to form the mold which defines the overflow opening.

The operation is as follows:

If the road bed R has been built, the operator places side wall I4 in such a position that the lower edges thereof which extend beyond end walls III will rest on the edge of the road, or just inwardly of lugs 86 as shown by line X-X in Fig. 8. In this position, forming member 46 will project beyond the edge E of the road bed, and the lower edge of member 46 Will be about flush with the top edge of the already built subsurface sewer wall W as shown in Fig. 9.. The walls II are now adjusted so that notches I8 engage retaining lugs 80. The outer side wall I2 is neXt placed in position with the lower portion thereof labutting the outer side of sewer wall W, also as shown in Fig. 9.

The end walls I6 are now placed in position and the extension plates 22 are adjusted so as to make a tight joint between the lower portions of the end walls and the edge Elr of the road bed R. The members 46 and 62 having been adjusted to the desired position on side wall I4, the concrete is now poured to produce wall WW which rests on sewer wall W. As will be seen from Fig. 8, the overflow throat T is in effect formed in the inner, or road-side edge of the wall WW and that the Wall WW constitutes a part of the usual curb C which separates the road bed from the ground on either side thereof. In other words, a curb portion is formed the inner edge of which is slanted away from the edge of the road bed Which supports the grate casting to provide the overflow throat T.

If the road bed R has not been built, the openings or spaces 41 are closed by plates P as shown in Fig. 7 so that they may extend down to the same depth as member 46 to confine the concrete poured from flowing out. In this construction the concrete is confined between the top of the sewer wall W, and the side and end walls of the frame.

After the concrete has hardened enough, the end walls I0 and the outer side walls I 2 are pulled out. To remove the inner wall I4, the end sections B of forming member 46 are rst detached and removed. This facilitates removal of the center section A and of the side wall I4.

What we claim is:

1. A demountable form for forming, in a single operation, a combined curb and sewer over-flow throat adjacent the edge of a road bed, said form including an outer wall adapted to be placed parallel to, and spaced from, the edge of the road bed, end walls adapted to be disposed substantially normal to said outer wall, an inner wall, said inner wall including an upper rail parallel to and coextensive with said outer wall and a forming member depending from the said rail, said formmg member including an upper portion which slopes downwardly toward said outer wall and a lower portion whichis substantially parallel to said outer wall and adapted to abut Athe,

5 edge of the road bed, means for vertically adjustably securing .said forming member to said upper rail in a detachable manner, said forming member being shorter than said rail whereby openings are formed between the ends of said forming member and the corresponding portions of said end Walls, and means for detachably securing the ends of said outer wall and the ends of said rail to said end Walls.

2. The structure recited in claim 1 and detachable closures for said openings.

3. The structure recited in claim 1 in which the portions of the end Walls below the level of the ro-ad bed are of a lesser width than the upper portions, and extension plates adjustably carried by the lower portions of the end Walls to vary the width of said lower portions according to the space available between the outer wall of the form and the edge of the road bed.

4. The structure recited in claim 1 in which the forming member is formed of a plurality of detachable sections, transversely considered.

6 5. The structure recited in claim 1 and plates adjustably carried by the inner ends of the forming member of closing the spaces between the ends of the forming member and the edge of the road bed.

ROMOLO J. ROSATI.

JAMES D. SOMERS.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Bean Oct. 31, 1939 

